| //===- llvm/unittest/ADT/PointerUnionTest.cpp - Optional unit tests -------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "gtest/gtest.h" |
| #include "llvm/ADT/PointerUnion.h" |
| using namespace llvm; |
| |
| namespace { |
| |
| typedef PointerUnion<int*, float*> PU; |
| |
| // Test fixture |
| class PointerUnionTest : public testing::Test { |
| }; |
| |
| float f = 3.14f; |
| int i = 42; |
| |
| const PU a(&f); |
| const PU b(&i); |
| const PU n; |
| |
| TEST_F(PointerUnionTest, Comparison) { |
| EXPECT_TRUE(a != b); |
| EXPECT_FALSE(a == b); |
| EXPECT_TRUE(b != n); |
| EXPECT_FALSE(b == n); |
| } |
| |
| TEST_F(PointerUnionTest, Null) { |
| EXPECT_FALSE(a.isNull()); |
| EXPECT_FALSE(b.isNull()); |
| EXPECT_TRUE(n.isNull()); |
| EXPECT_FALSE(!a); |
| EXPECT_FALSE(!b); |
| EXPECT_TRUE(!n); |
| // workaround an issue with EXPECT macros and explicit bool |
| EXPECT_TRUE((bool)a); |
| EXPECT_TRUE((bool)b); |
| EXPECT_FALSE(n); |
| } |
| |
| TEST_F(PointerUnionTest, Is) { |
| EXPECT_FALSE(a.is<int*>()); |
| EXPECT_TRUE(a.is<float*>()); |
| EXPECT_TRUE(b.is<int*>()); |
| EXPECT_FALSE(b.is<float*>()); |
| EXPECT_TRUE(n.is<int*>()); |
| EXPECT_FALSE(n.is<float*>()); |
| } |
| |
| TEST_F(PointerUnionTest, Get) { |
| EXPECT_EQ(a.get<float*>(), &f); |
| EXPECT_EQ(b.get<int*>(), &i); |
| EXPECT_EQ(n.get<int*>(), (int*)0); |
| } |
| |
| } // end anonymous namespace |